Sweet Pea
flower
⚠️ TOXIC if eaten — ornamental only. Provide a trellis or netting to climb. Soak seeds overnight before planting. Frequent picking extends blooming. Stops flowering in summer heat.
At a glance
- USDA Zones
- 3–9
- Sun
- Full sun (6+ hrs)
- Water
- Medium — water when top inch of soil is dry
- Soil
- Loam
- pH
- Neutral, alkaline
- Spacing
- 6 in. between plants
- Per square foot
- 4 plants per square
- Days to maturity
- About 70 days
Planting & harvest windows
Northern Hemisphere timing. Adjust ±4–6 weeks based on your last/first frost dates.
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| Harvest |
Plant Harvest
Good companions
Recommended varieties
- Mammoth Mix70 daysseed
Tall climbing type to 6 ft — intensely fragrant classic sweet pea.
- Spencer Mix75 daysseed
Large ruffled bicolor flowers — the florist sweet pea standard.
- Little Sweetheart65 daysseed
Compact 8-inch bush type — no support needed.
Add Sweet Pea to your raised bed — the planner handles spacing and companion warnings automatically.
Open the planner →